Based on the sayings of Ahlul-Bayt (a.s.), the soil of Karbala and the Turbah which is associated with the Chief of Martyrs, Imam Hussein (a.s.) enjoys a special significance. Sajda on this soil has been highly recommended by Infallible Imams (a.s.). For information in this regard, you can refer to index: 3015 (Prostration on Karbala Soil) on our website. That is why, in Shia jurisprudence, the Turbah which is associated with Imam Hussein (a.s) has certain rules which we will explain as under:
1. It is forbidden (haram) to make Turbah of Imam Hussein (a.s.) impure and in case it becomes impure, it is obligatory to make it clean.[1]
2. Used Turbahs or its fragments (broken pieces) should, like holy names, be buried underground or it should be thrown into river or running water.[2]
3. There should not be any obstruction between the forehead and the thing on which Sajda is done (e.g. ordinary Turbah). Therefore, if a Turbah is dirty and there are substances forming obstruction between the forehead and the Turbah, Sajda would be void on it but there is no problem in a Sajda on a Turbah whose color has changed.[3]

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